Wheel hub, a brake disc, a fastening means, and a system formed of wheel hub, brake disc and fastening means

Abstract

A wheel hub is configured to rotate about an axis of rotation during operation, and includes a brake disk abutment surface against which a brake disk bears in an installed state, and a wheel-hub-side contact surface which is offset in an axial direction with respect to the brake disk abutment surface and which runs obliquely with respect to the axis of rotation and against which at least a part of a fastening assembly, by which the brake disk is fastenable or fastened to the wheel hub, bears in the installed state.

The invention claimed is: 
     
       1. A wheel hub for a utility vehicle, where the wheel hub rotates about an axis of rotation during operation, comprising:
 a brake disk abutment surface against which a brake disk bears in an installed state; and 
 a wheel-hub-side contact surface which is offset in an axial direction with respect to the brake disk abutment surface and which runs obliquely with respect to the axis of rotation and against which at least a part of a fastening assembly bears in the installed state, wherein the brake disk is fastened to the wheel hub by the fastening assembly, wherein the wheel-hub-side contact surface at least partially delimits the wheel hub in an outward direction, wherein the fastening assembly has a screw or a bolt in addition to a cone element. 
 
     
     
       2. The wheel hub as claimed in  claim 1 , wherein the wheel-hub-side contact surface is inclined relative to the axis of rotation by an angle between 1° and 30°. 
     
     
       3. The wheel hub as claimed in  claim 2 , wherein the wheel hub narrows in an axial direction toward an end side of the wheel hub in the axial direction in order to form the wheel-hub-side contact surface. 
     
     
       4. The wheel hub as claimed in  claim 3 , wherein a ratio between a thickness of the brake disk in the region of the brake disk abutment surface measured in an axial direction to a length of the wheel-hub-side contact surface measured in the axial direction is between 0.3 and 0.9. 
     
     
       5. The brake disc as claimed in  claim 4 , wherein the ratio is between 0.4 and 0.8. 
     
     
       6. The brake disc as claimed in  claim 5 , wherein the ratio is between 0.5 and 0.7. 
     
     
       7. The wheel hub as claimed in  claim 4 , further comprising:
 a collar region which is situated at the outside as viewed in a radial direction; and 
 a core region which is situated at the inside as viewed in a radial direction; 
 wherein, as viewed in an axial direction, the core region situated at the inside is thicker than the collar region situated at the outside; and 
 wherein the wheel hub has, in the core region situated at the inside, the attachment of the brake disk. 
 
     
     
       8. The wheel hub as claimed in  claim 2 , wherein the angle is between 2° and 25°. 
     
     
       9. The wheel hub as claimed in  claim 8 , wherein the angle is between 4° and 10°. 
     
     
       10. The wheel hub as claimed in  claim 1 , wherein a ratio between a thickness of the brake disk in the region of the brake disk abutment surface measured in an axial direction to a length of the wheel-hub-side contact surface measured in the axial direction is between 0.3 and 0.9. 
     
     
       11. The brake disc as claimed in  claim 10 , wherein the ratio is between 0.4 and 0.8. 
     
     
       12. The brake disc as claimed in  claim 11 , wherein the ratio is between 0.5 and 0.7. 
     
     
       13. The wheel hub as claimed in  claim 1 , wherein the wheel hub narrows in an axial direction toward an end side in order to form the wheel-hub-side contact surface. 
     
     
       14. The wheel hub as claimed in  claim 1 , further comprising:
 a collar region which is situated at the outside as viewed in a radial direction; and 
 a core region which is situated at the inside as viewed in a radial direction; 
 wherein, as viewed in an axial direction, the core region situated at the inside is thicker than the collar region situated at the outside; and 
 wherein the wheel hub has, in the core region situated at the inside, for the attachment of the brake disk. 
 
     
     
       15. A brake disk for a utility vehicle, where the brake disk rotates about an axis of rotation during operation, comprising:
 a wheel hub abutment surface against which a wheel hub bears in an installed state; and 
 a brake-disk-side contact surface which is offset in an axial direction with respect to the wheel hub abutment surface and which runs obliquely with respect to the axis of rotation and against which at least a part of a fastening assembly bears in the installed state, wherein the brake disk is fastened to the wheel hub by the fastening assembly, wherein the brake-disk-side contact surface at least partially delimits the brake disk in an inward direction toward the axis of rotation, and wherein the fastening assembly has a screw or a bolt in addition to a cone element. 
 
     
     
       16. The brake disk as claimed in  claim 15 , wherein the brake disk has at least one fastening groove through which the fastening assembly extends in an installed state, wherein the fastening groove is open toward the axis of rotation. 
     
     
       17. A brake system comprising:
 a wheel hub; 
 a fastening assembly; and 
 a brake disk which rotates about an axis of rotation in the installed state; 
 wherein the wheel hub comprises:
 a brake disk abutment surface against which a brake disk bears in an installed state; and 
 a wheel-hub-side contact surface which is offset in an axial direction with respect to the brake disk abutment surface and which runs obliquely with respect to the axis of rotation and against which at least a part of a fastening assembly bears in the installed state, wherein the brake disk is fastened to the wheel hub by the fastening assembly, wherein the wheel-hub-side contact surface at least partially delimits the wheel hub in an outward direction; 
 wherein the brake disk comprises: 
 a wheel hub abutment surface against which a wheel hub bears in an installed state; and 
 a brake-disk-side contact surface which is offset in an axial direction with respect to the wheel hub abutment surface and which runs obliquely with respect to the axis of rotation and against which at least a part of the fastening assembly bears in the installed state, wherein the brake-disk-side contact surface at least partially delimits the brake disk in an inward direction toward the axis of rotation, and wherein the fastening assembly has a screw or a bolt in addition to a cone element; and 
 wherein the fastening assembly has a fastening-means-side contact surface which runs obliquely with respect to the axis of rotation and against which the wheel hub and/or the brake disk bear in the installed state. 
 
 
     
     
       18. The brake system as claimed in  claim 17 , wherein the brake-disk-side contact surface and/or wheel-hub-side contact surface are configured such that, in the installed state, the brake-disk-side contact surface and/or the wheel-hub-side contact surface runs parallel to the fastening-means-side contact surface.